Buffing-machine.



P.- T. BEIER & F. BOCK.

BUFHNC MACHINE.

APPLICATION mu) MAY 31, 1913.

1,286,639. Patented Oct. 8, 1918.

3 SHEETS SHEET 1.

P. T. BEIER & F. BOCK.

Patentd Oct. 8, 1918.

3 SHEETS-SHEET 2.

P: T. BEIER & F. BOCK.

BUFFING MACHINE.

APPLICATION men mwal. 191a.

Patented Oct. 8, 1918.

riffs-SHEET 3- UNITED STATES PATENT OFFIGEQ PAUL THEODOR BEIER, OF RODELHEIM, FRANKFORT-ON-THE-MAIN, AND FERDINAND BOOK, OF FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNORS, BY MESNE ASSIGN- MEN TS, TO UNITED SHOE MACHINERY CORPORATION, OF PATERSON, NEW JERSEY,

A conrorm'rron on NEW JERSEY.

. BUFFING-MACHINE.

Specification of Letters Patent.

Application filed May 31, 1913. Serial No. 771,051.

To all whom it may concern:

Be it known that we, PAUL THEODOR BEIER, a subject of the Grand Duke of Baden, residing at Rodelheim, F rankfort-onthe-Main, Germany, and FERDINAND BOOK,

a subject of the King of Prussia, residing at Frankfort'-on-the-Main, Germany, have invented certain Improvements in Buffing-Machines, of which the following description, in connection with the accompanying drawings, is a' specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to machines for removing material from stock and is herein illustrated in connection with a machine for buffing taps, soles, insoles, and similar articles.

It is at times desirable to roughen the surface of a tap or sole so that the cement which is subsequently applied will secure a better hold; or again, it may be desirable to remove the grain from an insole so that it will be rendered more flexible and have less tendency to crackwhen bent. Hitherto machines which have been used to perform these and analogous operations have required to be adjusted in accordance with the thickness of each piece of stock-which is to be fed to the machine.

The general object of the present. invention is to provide a machine having butting mechanism with means for causing said mechanism to remove a predetermined amount of material from each piece of stock fed to the machine irrespective of the origi-* nal thickness of said piece. The means referred to above may, if desired. be automatic and is so shown in the illustrative machine.

In machines of this general type it is common to provide a butling roll and a presser between which the stock passes and feeding mechanism for advancing a piece of stock thereto. According to one feature of the invention, means are provided, responsive to the thickness of the stock, forseparating the presser and the butting roll by a dist ance such that a predetermined amount will be removed from each piece irrespective of its original thickness. In the illustrative machine a connection is provided between the presser and the feed mechanism for de termining the space between the presser and the bufling roll so as to accomplish this result.

In order that the same limit to the movement of the presser toward the bufling roll may be maintained throughout the entire butting operation, another feature of the invention consists, in a machine having a presser and front and rear feed members the positions of which determine the posi-- tion of the presser, of a connection between said front and rear feed members whereby when one member is raised the other is raised 5 an equal amount. Vith this construction the limit to the movement of the presser toward the bufling roll is maintained throughout the entire butting operation.

These and other features of the invention including certain details of construction and combinations of parts will be described in connection with an illustrative machine and pointed out in the appended claims.

I Referring now to the accompanying draw- 5 1ngs:-

Figure 1 is a front elevation of a machine in which the present invention is embodied;

Fig. 2 is a side elevation of the machine, the plate which covers certain of the gears 30 havingbeen removed; v

Fig. 3 is a plan of a portion of the upper part of the machine;

4 is a section through that partof the machine shown in Fig. 3; and 35 Fig. 5 is a detail illustrating the linkage which connects the upper feed rolls, the posts .31 being shown in cross section.

A standard 1 rising from the base of the machine is provided with bearings in which is rotatablv' mounted a shaft said shaft carrying a utlin roll 5 of any suitable type. Conveniently this roll may be a split roll, and'in such case a hand wheel 7 fast to the shaft 3 enables the operator to hold the shaft while the roll .is turned to disengage the catch which holds the sections of the roll together. The rotation' of this shaft is accomplished by a belt which passes around a pulley 9 on said shaft and around a large pulley 11 on a counter shaft 13.

Above the bufling roll 5 is a table 15 pro vided with openings to expose the upper portion of said roll and the upper portions of two lower feed rolls 17 (see Fig. 4). The shafts of these lower feed rolls are rotatably mounted in bearings in the table 15, and said table is angularly adjustable about the axis of the shaft 19 of the rear lower roll 17, the.

adjustment being accomplished by means of a set-screw 21. Rising from the table are two guide rods 23, and slidable on these rods is an upper feed roll carrier 25 in which are freely rotatable the shafts of the two upper feed rolls 27, said rolls being connected by mechanism shown best in Figs. 4 and 5 whereby the raising of one roll a given distance raises the other an equal distance.

Pivoted at 29 to the upper feed roll carrier 25 are two sets of posts 31; and rigid with and rising from the table 15 are two corresponding sets of standards-33. Two of links 35 are connected with these standards by pivots 37 which pass through ears on the standards, and with the posts 31 by pivots 39. The links 35 of each set or pair are also pivoted together at their inner ends at 41 as well as to a slide block 43 which is located in a vertical guideway in the upper feed roll carrier 25. \Vith this construction it will be apparent that the raising or lowering of either one of the upper feed rolls imparts a similar and equal movementto the other, and that if one feed roll is held above the table 15 a given distance the other will be held above it an equal distance.

The presser roll 45 is journaled in depending arms of a presser roll carrier +17 which, like the feed roll carrier 25, is vertically slidable upon the rods 23 (see Fig. 1). Located above the presser roll carrier 47 and also slidable on the upright rods is a bar 49 having four arms (see Fig. '3) each of which is provided with an eye to receive the reduced upper end of one of the posts. 31. This bar is constantly urged downwardly by springs 51 the tension of which may be varied by nuts 53; and between this bar and the presser roll carrier 47 is a spring 55, the tension of which may be varied by turning the adjusting screw 57.

The extent of the downward movement of the presser roll carrier 47 is limited by stops 59 so that there is normally about one-sixteenth of an inch play, as shown in Figs. 1 and 2, between the upper surfaces of the portions of the feed roll carrier 25 which embrace the rods 23 and the adjacent lower surfaces of the similar portions of the presser roll carrier 47. Normally, too, as shown in Fig. at, the lowermost points of the upper feed rolls and the presser roll are substantially in the same plane.

VV'th the construction thus far described, when a sole or similar article is fed to the forward feed rolls, the upper forward feed roll is raised a distance dependent upon the thicknessof the sole, and at the same time the upper rear feed roll is raised an equal distance. The presser roll 45, however, is raised a less distance, owing to the play between the parts 25 and 47 referred to above so that the sole then raises this presser roll against the force of the spring The amount of material which is removed from the sole thus depends principally upon the position of the table 15 and to a slight extent upon the tension of the spring It should be noted, however, that with a given adjustment of the table 15 and the spring the amount of material removed is predetermined and does not depend upon the thickness of the sole. The tension of the spring is ordinarily varied, by turning the adj usting screw 57, only when the quality of the. stock which is to be fed to the machine is to be changed, that is, for a given quality of stock the screw 57 is properly set and re ceives no further attention until stock of a different quality is to be operated upon. Although, as stated above, the tension of the spring 55 is ordinarily adjusted merely in accordance with the quality of. stock which is to be operated upon, it is obviously possible to vary to some extent in this manner the amount of material which shall be removed; and the tension of the spring is sometimes varied for this purpose, namely, to determine with nicety the amount: of material which is to be removed after the table 15 has been adjusted to determine the amount roughly.

After the piece of stock emerges from be tween the rear feed rolls, it passes beneath a spring-pressed foot 61, the stem of which may be adjusted by turning a hand wheel 62, said foot being adapted to force the buffed surface of the piece against a brush 63 fast upon a shaft 65. This shaft carries a grooved pulley 66 (see Fig. around which and around a similar pulley 68 (see Fig. 1) on the counter-shaft 13 passes a belt not shown. Apulley 75 is fast upon a short shaft which carries a gear 67 (see Fig. 2), said gear meshing .with a gear 69 on the shaft of the rear lower feed roll; and from the lattergear is driven, through a train of idle gears 71, a gear 73 which is fast to the shaft of the forward lower feed roll. The idle gears 71 are carried by a bracket on the table 15 as best shown in Fig. 1. The pulley 75 is driven from a small pulley 77 by means of a belt, said small pulley being fast to a shaft 7 t) which also carries a pulley 81 located in position to be driven by a belt from a pulley 83 on the counter-shaft 13. A blower 85 of any approved type has its rotary member mounted upon a shaft 87,

said shaft also carrying a small pulley 89 which is adapted'to be driven from a large pulley 91 on the counter-shaft. The rotation of the counter-shaft 13 is controlled in the usual manner by a belt shifter to which is attached an operating handle 93.

In order to permit cleaning of the bufiing roll when desired, a cleaning brush 95 (see Figs. 1 and 4) is loosely mounted upon a shaft 97-, said shaft being carried at one end of a crank 99, the other end of which is fast to a shaft 101 having at its end a handle 103 by which it may be turned to bring the brush into contact with the roll.-

A coiled spring 105 having one end fast to the frame of the machine and the other end fast to the hub of the handle 103 normally holds the brush away from the roll.

The operation of the machine is as follows: A sole or other piece of work is fed to the machine from the left as viewed in Fig. 4, the screw 21' having previously been adjusted to determine how much material is to be removed. As the sole is fed beneath the upper front feed roll 27it raises said roll and through the links 35 raises the rear upper feed roll an equal amount. The first part of this upward movement 'does not affect the presser roll 45 but as soon as the upward movement has been suflicient to take up the play between the feed roll carrier 25 and. the presser roll carrier 17, said presser roll carrier is also-raised. It should be noted that the amount which the presser roll is raised is proportional to but less than the thickness of the stock. Consequently as the forward end of the stock reaches the presser roll -15 it raises said roll against the force of the spring 55, and this spring exerts an approxin'iately uniform pressure upon the sole throughout its entire length as it is fed along, it being noted that at no time can the operative portion of the presser roll approach nearer to the plane of the operative portions of the upper-feed rolls than the extent of the play or lost motion which originally existed between the feed roll carrier 25 and the presser roll carrier l7. The parts are so'arranged that before the rear end of the piece of stock has passed from beneath the forward feed roll 27 the forward end of said stock will have passed beneath the rear upper feed roll' 27 so that the action of the presser roll -15 upon the ness of the piece'of stock andthat said ill lick? ness does not in any way affect the tension of the spring 55.

Although the invention has been set forth in connectionwith a particular machine, it

should be understood that the invention is not limited in the scope of its application to the particular machine shown and described. In this connection it should be Having thus described our invention, what we claim as new and desire to secure by Letters Patent of the United States is 1. A machine of the class described having, in combination, a bufiing roll, a presser, means for feeding to said roll and presser a piece of stock, means for moving said presser from said buffing roll a distance proportional to but less than the thickness of said piece, a support for the piece of stock, and means for causing relative adjustment between said support and bufiing roll.

Z A machine of the class described having, in combination, a bufling roll, a presser,

a I piece of stock, means controlled by the thickness of the piece of stock during its passage through the machine for moving said presser from said bufling roll a distance proportional to but less than the thick- I ness of said piece, a support for the piece means for feeding to said roll and presser ing, in combination, buflin'g mechanism including a buffing roll and a presser, feeding mechanism including separable members,

and connecting means whereby movement of one of said separable members causes movement of said presser.

5. A machine of the class described having, in combination, a bufling roll, a presser arranged to hold the stockagainst the biiifingroll, a movable presser carrier, a feed roll arranged to feed the stock to the buffing roll and presser, and a movable feed roll carrier, said presser carrier being located in position to be lifted by said .feed

roll carrier whereby movement of the feed roll carrier mtwes the presser carrier.

' "6. :Lmachine of the class described having, in combination, a support along which a piece of stock may be fed, a bufiing roll projecting throughsaid support, a presser arranged'to hold the stock against the buffing roll, a movable presser carrier, a. feed roll, and a movable feed roll carrier, sa d presser carrier being located in position to be lifted by said feed roll carrier whereby in the same movement of the feed roll carrier away from the sup ort moves the presser carrier d irection.

7. A machine of the class described having, in combination, a support for a piece of stock, a butiing roll, a .presser located above said bufl'ing roll, a feed roll for ad vancing the stock to the butting roll, a feed roll carrier, means for permitting said carrier to yield, a presser carrier located above the feed roll carrier in position to be lifted by said feed roll carrier, means for permitting said presser carrier to yield, and means for adjusting said support with respect to said butting roll.

8. A machine of the class described having, in combination, a support for a piece of stock, a bufiing roll extending above said support, a presser located above said bufl'ing roll, a feed roll for advancing the stock to the bufling roll, a feed roll carrier movable away from said support, a presser carrier located above said feed roll carrier and movable in the same direction, a bar located above said presser carrier, a connection between said feed roll carrier and said bar whereby movement of said carrier away from said support is imparted to said bar, yielding means for urging said bar toward said support, and a spring located between said bar and said. presser carrier.

9. A machine ofthe class described hav ing, in combination, a support for a piece of stock, a buifing roll extending above said support, a presser located above said buffing roll, a feed roll for advancing the stock to the butting roll, a feed roll carrier movable away from said support, a presser carrier located above said feed roll carrier and movable in. the same direction, a bar located above said presser carrier, a connection between said feed roll carrier and said bar whereby movement of said carrier away from said support is imparted to said bar, yielding means for urging said bar toward said support, a spring located between said bar and said presser carrier, and means for varying the tension of said spring.

10. A machine ofthe class described having, in combination, a support for a piece of stock, a bufiing roll extending above said support, a presser located above-said lmfling roll, a feed roll for advancing the stock to the butting roll, a feed roll carrier movable away from said support, a presser carrier located above said feel roll carrier and movable in the same direction, a bar located above said presser carrier, a connection between said feed roll carrier and said bar whereby movement of said carrier, away from said support is imparted to said bar, yielding means for urging said bar toward said support, a spring located between said bar and aid presser carrier, and means for varying the tension of said spring, said feed roll carrier, presser carrier, and bar being carried by said support.

11. A machine of the class described having, in combination, a support for a piece of stock, a bufiing roll extending above said support, a presser located above said bufling roll, a feed roll for advancing the stock to the butting roll, a feed roll carrier movable away from said support, a presser of stock, a butting roll projecting above said support, a presser located above said bufiing roll, a feedroll carrier, a spring urging said carrier toward said support, a presser carrier, a spring urging said carrier toward said support, and a stop for limiting said movement whereby a certain amount of movement of the feed roll carrier away from the support is permitted before the presser carrier is moved.

13. A machine of the class described, having, in combination, a. presser, a bufiing roll, means for feeding the stock between said presser and roll, and ineans responsive to the thickness of the stock for separating the presser and roll by a distance such that a predetermined amount will be removed from each piece of stock irrespective of its original thickness. i

14. A machine of the class described, having, in'combination, a presser, a bufiing roll, front and rear feed members for feeding a piece of stock between the roll and presser, connections between the feed members such that movement of one feed member in response to the thickness of the stock moves the other feed member an equal amount, and connections between the presser and the feed members such that the positions of the feed members due to the engagement of either one of them with the stock determines the position of the presser.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. Q. 

